Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warner Lambert Co LLC
Original Assignee
Warner Lambert Pharmaceutical Co
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Filing date
Publication date
Priority claimed from US11987Aexternal-prioritypatent/US3007940A/en
Application filed by Warner Lambert Pharmaceutical CofiledCriticalWarner Lambert Pharmaceutical Co
Priority to FR841401ApriorityCriticalpatent/FR1297727A/fr
Application grantedgrantedCritical
Publication of FR1297727ApublicationCriticalpatent/FR1297727A/fr
C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
C07D307/94—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom spiro-condensed with carbocyclic rings or ring systems, e.g. griseofulvins
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
FR841401A1960-03-011960-10-17Procédé perfectionné de préparation de la beta, beta-pentaméthylène butyrolactone et de ses sels
ExpiredFR1297727A
(fr)